#import sys


#str = sys.stdin.readline()
#print(str)

#num = input("输入第一个数字:")
#print(num)


#sys.stdout.write('man!')
#print('what can I say?')

#file=open('a.txt','r',buffering=1)
#print(file.read())
#file.close()

#with open('a.txt','r',encoding='utf-8',buffering=1) as file2:
    #print(file2.readline())
    #print(file2.readline())
    #print(file2.readlines())

with open('a.txt','a',encoding='utf-8',buffering=1) as file3:
    file3.write('man,')
